This effect was in Classic and it's possible in the WebGL renderer, but it's more difficult in the canvas 2D renderer... I'm not sure if it will be possible in canvas 2D, and if not, we might hold off implementing it.

@paulocoghi : illuminated.js shouldn't be used in production, since all lightning calculation are made on Canvas, too slow to be realtime when you have other things to calculate in parallel (like the whole gameplay, physics, or Sprites movements).